2499631 has 2 divisors, whose sum is σ = 2499632. Its totient is φ = 2499630.

The previous prime is 2499619. The next prime is 2499641. The reversal of 2499631 is 1369942.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2499631 - 2⁵ = 2499599 is a prime.

It is a super-2 number, since 2×2499631² = 12496310272322, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2499641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1249815 + 1249816.

It is an arithmetic number, because the mean of its divisors is an integer number (1249816).

2^2499631 is an apocalyptic number.

2499631 is a deficient number, since it is larger than the sum of its proper divisors (1).

2499631 is an equidigital number, since it uses as much as digits as its factorization.

2499631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 34.

The square root of 2499631 is about 1581.0221377324. The cubic root of 2499631 is about 135.7142030339.

The spelling of 2499631 in words is "two million, four hundred ninety-nine thousand, six hundred thirty-one".